Lamp for locomotive cabs and the like



'May 18'-, m26. 1,585,467

A F. R. COOPER LAMP FOR LOCOMOTIVE GABS AND THE LIKE 'Filed April 21.,1325 lll als

Patented May 1S, i926.,

il hl ll E lli lil LAMP FOR LOCOJIOTIVE CABS AND Tl-IE LlE.

Application led April 531, 1925.

lThis invention relates to an electric light and casing particularlyadapted for use in locon'iotive cabs and in other similar locations, andits object is to provide a `suitable arrangement whereby a single sourceot light will dirutly illuininate the liront part of the tender r id thedecl, as well as the faces in the cab, at the saine tinie being` et'fectively screened troni the eyes ot the engineer or firennin or oitrainn'ien approach- 'ein the trein, while delle tion and dii?- Ii ionoi' the light illuminates the interior oi the cab suiliciently so thatthe engineer can readily vfind the various levers for operating' thelocomotive.

Other objects and advantages, and the construction by which they areobtained, will be incre iully set i'orth in the following detaileddescription, which is to be read in connection with the accompanyingdrawing illustrating` one embodiment of the invention.

ln the drawing:

Figure l is a. rear elevation of the invention with a 'portion ci thecasing shown in section.

Figure 2 is a side elevation thereof with the outer casing raised.

Figure 3 is a vertical sectional view oi? the invention.

Figure 4l is a horizontal section thereof.

In carrying out the invention, an electric light socket 5 is secured tothe threaded lower end ol a small pipe 6, the upper end ol which issecured to the gauge l rachet or lother suitable place on the boilerhead by a piece oi strap iron 7 fastened at top end of sinall pipe (3 orriveted to the lower part of the inner cylindrical casing. An electriclight bulb 8 is connected with the socket 5, and is supplied withcurrent by wires 9 which pass through the pipe 6.

The bulb 8 is surrounded by an inner cylindrical casing' oit skeletonformation, consisting of an upper band l0 and a lower band 1l connectedby side strips 12, and supported in relatively liXed position by anarcuate strip or bail 13, which is intermedially secured to the pipe Gimmediately above the socket 5, and is provided at its ends with pinslll soldered or welded thereto, and to the band l0 and protruding,-outwardly through the latter.

The outer cylindrical casing;- 15 normally surrounds the inner casing',and is provided with vertical slots 16 for receiving the proslot, sothat the Serial No. @LT/9?.

truding ends or" the pin lll, and forming guideways by which the outercasing is guided tor vertical inoveinent with respe t to the inner1risingand bulb Si. laclrslot 1G is provided at its upper end withlaterally disposed portion i? lil-e a bayonet outer casing l5 may belocled in its lowernioet position. 'lhere is :also a lateral recess jillnear the lower end ot each slot 16, whereby the outer casing l5 may hesecured in 'aised position, as shown in igure 2. Cleats i9 are solderedor otherwise secured about the lower ends of the slots i6, so as toprevent distortion or spreading ci" the lower end ot the casing l5,while the .slot l5 extends to the lower end of the casingl l5, so thatthe latter may, when desired, be completely ren'ioved troni the innercasing,

An opening 2O is formed in one side of the casing l5 in position -forthe light frein the bulb 8 to shine through and illuminate, the tenderand decir. A hood or visor 2l is secured to the casing l5, and entendsoutwardly and downwardly about the opening; 20, so as to prevent thedirect or reliected rays of light from being projected laterally todazzle the eyes ot the engineer or lireman. A similar though smalleropening 22 is formed in the casing` l5 at the side opposite the opening`20, and in a position to illuminate the gages. rllhe opening Q2 ispret'- erably formed by cutting two 'flaps or tongues 23 'troni the sideof the casing, and bendingq theni ouinvardl7 to forni shields t'orpreventing' the light troni being projected laterally frein the openinglThe lower end of the inner casing' is closed by a protective screen orshield Q4, which inay be of wire network, or any suitable material whichwill catch the fraginents of the bulb 8, in case the latter shouldbecome broken, and will prevent the saine from dropping to the floor ofthe cab lor dying into the face oi" the iireinan.

By the use ot this lainp, the electric light which is usually located onthe rear of the cab roof is eliminated. A single lamp serves toilluminate the tender and deck, as well as the gages in the cab. Thecasings are open at the top and sufiicient light shines through the topand is reflected and diffused within the cab, so that the engineer cansee to operate the engine without having his vision iin- )aired by anyglare. he absence of the light in the top of the cab roof eliminates theglare over the top of the tender in the di rection olf the train, andalso eliminates a source of annoyance to the engineer when switching.rl"he fact that only one light is used also reduces the expense ofinstallation and upkeep. Whenever a bright light is needed, or desired,in the cab, or when it is desired to replace a bulb, the outer casing l5may be easily li'tted and secured in the position shown in `Figure 2.The screen 2% in the bottom ot the casing' not only prevents scatteringthe glass in case the bulb is broken but prevents the bulb 'rom droppingout in case it should work loose 'from the socket.

1While l have shown and described the detailed construction ot theinvention in one term in which it may be embodied, it is apparent thatmany ot the details thereof may be modilied without departing materiallyVtrom the salient features ot the invention.4 It is, therefore, myintention to include all such modifications within the scope ot' theappended claims.

.Vhat is claimed is:

l. In a lamp for locomotive cabs and the like, the combination ot asocket tor receiving an electric light bulb, means for securing thesocket in lifted depending relation to some part of' the cab, an .innercasing ott skeleton formation, including an upper band surrounding thesocket and .termed with depending side strips on opposite sides oi thebulb, an outer casing surrounding the inner casing and adjustablevertically to cover or uncover the bulb, said outer casing havingopenings through which the light may shine upon the tender, deck andgages when said outer casing is lowered, and shields for said openingsto prevent the light from being projected laterally when it shinesthrough said openings, said outer casing, when raised, leaving the spacebetween said side strips entirely unobstructed for the passage ot light.

2. ln a lamp 'l'or locomotive cabs and the like, the combination of anelectric light socket, a depending fixture to the low-er end of whichthe socket is secured, an inner ca, ing surroundingthe socket and havingopenings to permit passage of light, a bail clamped to said fixture andsupporting said casing, opposed pins protruding outwardly from saidcasing at diametrically opposite points, an outer casing surrounding theinner casing and having vertical slots receiving` the respective pins,and means engageable by said pins in a plurality et positions to securethe outer casing against relative vertical movement.

3. ln a lamp 'jor locomotive cabs and the like, the combination oit asocket, an inner casino' surrounding the socket and secured in fixedrelation thereto, opposed pins secured to and protruding outwardly fromthe in- Vner casing at diametrically opposite points,

an outer casing surrounding the inner casing and having vertical slotsreceiving the respective pins, said casings having openings throughwhich the light may shine upon the tender, deck and gages, shields toprevent the light from being projected laterally, both of said casingsbeing open at 'the top and means to hold the outer casing selectivew lyin a plurality ot' positions against vertical movement.

4.-. ,in a lamp for locomotive cabs and the like, the combination ot' anelectric light socket, depending fixture to the lower end ot which thesocket is secured, an inner casing ot' skeleton formation surroundingthe socket, a bail clamped to said Fixture and supporting said casing,opposed pins protruding outwardly from said casing, an outer casingsurrounding the inner casing and having vertical slots receiving therespective pins so as to guide the outer casing ioi vertical movement,said outer casing having` openings through which the light may shineupon the tender, deck and gages, and shields to protect the light frombeing pro jeeted laterally, each of said slots having lateral brancheswith which the pins may be engaged to lock the outer casing in an upperor lower position.

n testimony, that I claim the Aforegoing as my own, l have heretoatiixed my signa- FRANCIS RAYMGND COGPER.

